AD8305ACP-R2 Analog Devices Inc, AD8305ACP-R2 Datasheet - Page 5

• Manufacturer Part Number: AD8305ACP-R2
• Description: IC LOGARITHM CONV 100DB 16-LFCSP
• Manufacturer: Analog Devices Inc
• Type: Logarithmic Converterr

Specifications of AD8305ACP-R2

• Rohs Status: RoHS non-compliant
• Design Resources: Interfacing ADL5315 to Translinear Logarithmic Amplifier (CN0056) Interfacing ADL5317 High Side Current Mirror to a Translinear Logarithmic Amplifier in an Avalanche Photodiode Power Detector
• Applications: Fiber Optics
• Mounting Type: Surface Mount
• Package / Case: 16-LFCSP
• Other names: AD8305ACP-R2CT

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 3. Pin Function Descriptions
Pin No.
1
2
3
4
5
6, 7
8
9
10
11
12
13 to 16
Mnemonic
VRDZ
VREF
IREF
INPT
VSUM
VNEG
VPOS
VLOG
BFIN
SCAL
VOUT
COMM
EPAD
Function
Top of a Resistive Divider Network that Offsets V
may also be connected to ground when bipolar outputs are to be provided.
Reference Output Voltage of 2.5 V.
Accepts (Sinks) Reference Current, I
Accepts (Sinks) Photodiode Current, I
flows into INPT.
Guard Pin. Used to shield the INPT current line and for optional adjustment of the INPT and I
potential.
Optional Negative Supply, V
Positive Supply, (V
Output of the Logarithmic Front End.
Buffer Amplifier Noninverting Input.
Buffer Amplifier Inverting Input.
Buffer Output.
Analog Ground.
The exposed pad must be soldered to ground.
P
− V
NOTES
1. CONNECT EPAD TO GROUND.
N
VRDZ 1
VREF 2
IREF 3
INPT 4
) ≤ 12 V.
Figure 2. Pin Configuration
N
(this pin is usually grounded; for details of usage, see the Applications section.
Rev. B | Page 5 of 24
(Not to Scale)
AD8305
TOP VIEW
PIN 1
INDICATOR
REF
PD
.
. Usually connected to photodiode anode such that photo current
12 VOUT
11 SCAL
10 BFIN
9 VLOG
LOG
to Position the Intercept. Normally connected to VREF;
REF
node
AD8305